<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="班级名称" prop="className">
        <el-input
          v-model="queryParams.className"
          placeholder="请输入班级名称"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="班级状态" prop="classStatus">
        <el-select v-model="queryParams.classStatus" placeholder="班级状态" clearable>
          <el-option
            v-for="dict in dict.type.sys_normal_disable"
            :key="dict.value"
            :label="dict.label"
            :value="dict.value"
          />
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <!-- <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button> -->
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['system:class:add']"
        >新增</el-button>
      </el-col>
      <!-- <el-col :span="1.5"> -->
        <!-- <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['system:class:edit']"
        >修改</el-button>
      </el-col> -->
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['system:class:remove']"
        >删除</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="classList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="班级名称" align="center" prop="className" />
      <!-- 删除绑定老师列 -->
      <el-table-column label="班级状态" align="center" prop="classStatus">
        <template slot-scope="scope">
          <dict-tag :options="dict.type.sys_normal_disable" :value="scope.row.classStatus"/>
        </template>
      </el-table-column>
      <el-table-column label="班级说明" align="center" prop="classDesc" />

      <el-table-column label="创建时间" align="center" prop="createTime" width="180">
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.createTime) }}</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['system:class:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['system:class:remove']"
          >删除</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-user"
            @click="handleAuthUser(scope.row)"
            v-hasPermi="['system:class:edit']"
          >学员</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDeleteAllStudents(scope.row)"
            v-hasPermi="['system:class:edit']"
          >删除全部学员</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改班级对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="班级名称" prop="className">
          <el-input v-model="form.className" placeholder="请输入班级名称" />
        </el-form-item>
        <el-form-item label="班级状态" prop="classStatus">
          <el-radio-group v-model="form.classStatus">
            <el-radio
              v-for="dict in dict.type.sys_normal_disable"
              :key="dict.value"
              :label="dict.value"
            >{{dict.label}}</el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item label="班级说明" prop="classDesc">
          <el-input v-model="form.classDesc" type="textarea" placeholder="请输入内容" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>

    <!-- 分配学员对话框 -->
    <el-dialog :title="title" :visible.sync="openAuthUser" width="800px" append-to-body>
      <el-transfer v-model="userIds" :data="studentList" :titles="['待分配', '已分配']" :props="{key: 'studentId', label: 'studentName'}" @change="handleUserSelect"></el-transfer>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitAddUserToClass">确 定</el-button>
        <el-button @click="closeAuthUser">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listClass, getClass, delClass, addClass, updateClass } from "@/api/system/class";
import { listAllStudent, listAssignedStudnet, addBatch, cancelAuthUserAll } from "@/api/system/class";

export default {
  name: "Class",
  dicts: ['sys_normal_disable'],
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 班级表格数据
      classList: null,
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 是否显示学员分配弹出层
      openAuthUser: false,
      // 学员列表数据
      studentList: [],
      // 已选择的学员列表
      userIds: [],
      // 当前选中的班级ID
      currentClassId: null,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        className: null,
        classStatus: null
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        className: [
          { required: true, message: "班级名称不能为空", trigger: "blur" }
        ],
        classStatus: [
          { required: true, message: "班级状态不能为空", trigger: "change" }
        ]
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    /** 查询班级列表 */
    getList() {
      this.loading = true;
      listClass(this.queryParams).then(response => {
        this.classList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    /** 提交按钮操作 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.classId != undefined) {
            updateClass(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addClass(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const classIds = row.classId || this.ids;
      this.$modal.confirm('是否确认删除班级编号为"' + classIds + '"的数据项？').then(function() {
        return delClass(classIds);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    },
    /** 取消按钮操作 */
    cancel() {
      this.open = false;
      this.reset();
    },
    /** 表单重置 */
    reset() {
      this.form = {
        classId: undefined,
        className: undefined,
        classStatus: "0",
        classDesc: undefined
      };
      this.resetForm("form");
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加班级";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const classId = row.classId || this.ids;
      getClass(classId).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改班级";
      });
    },
    /** 多选框选中数据 */
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.classId);
      this.single = selection.length != 1;
      this.multiple = !selection.length;
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.$refs["queryForm"].resetFields();
      this.handleQuery();
    },
    /** 分配学员操作 */
    handleAuthUser(row) {
      this.title = "分配学员";
      this.openAuthUser = true;
      this.currentClassId = row.classId;
      this.getAllStudentList();
      this.getAssignedList(row.classId);
    },
    /** 获取未分配学员列表 */
    getAllStudentList() {
      listAllStudent().then(response => {
        this.studentList = response.rows;
      });
    },
    /** 获取已分配学员列表 */
    getAssignedList(classId) {
      listAssignedStudnet({classId: classId}).then(response => {
        this.userIds = response.rows.map(item => item.studentId);
        // this.userIds = [4, 5];
        console.log('this.userIds---', this.userIds);
      });
    },
    /** 学员选择事件 */
    handleUserSelect(value) {
      this.userIds = value;
      console.log('handleUserSelect---', value);
    },
    /** 提交学员分配 */
    submitAddUserToClass() {
      addBatch(this.currentClassId, this.userIds).then(response => {
        this.$modal.msgSuccess("分配成功");
        this.openAuthUser = false;
      });
    },
    /** 关闭学员分配对话框 */
    closeAuthUser() {
      this.openAuthUser = false;
      this.currentClassId = null;
      this.userIds = [];
      this.studentList = [];
    },
    /** 删除全部学员 */
    handleDeleteAllStudents(row) {
      const classId = row.classId;
      this.$modal.confirm('是否确认删除该班级下的全部学员？').then(function() {
        return cancelAuthUserAll({
          classId: classId
        });
      }).then(() => {
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    }
  }
}

</script>
